The IPS app is very hands on and has a learning curve. Unless you have port forwards, the almost unanimous consensus here is that the IPS app is bringing you no benefit, especially in your case.

In any case, the local network will create a large volume of detection noise—false positives—through normal behavior. (Part of the learning curve is being able to separate the wheat from the chaff through reading the reports.) What you’re seeing is almost certainly generated internally and nothing to worry about.